计算：(x)/(x-y)-(y)/(x+y)+(2xy)/(x^2-y^2)
来源：学生作业帮助网 编辑：六六作业网 时间：2024/05/16 15:44:44
计算：(x)/(x-y)-(y)/(x+y)+(2xy)/(x^2-y^2)计算：(x)/(x-y)-(y)/(x+y)+(2xy)/(x^2-y^2)计算：(x)/(x-y)-(y)/(x+y)+(
计算：(x)/(x-y)-(y)/(x+y)+(2xy)/(x^2-y^2)
计算：(x)/(x-y)-(y)/(x+y)+(2xy)/(x^2-y^2)
计算：(x)/(x-y)-(y)/(x+y)+(2xy)/(x^2-y^2)
=x(x+y)/(x^2-y^2)-Y(x-y)/(x^2-y^2)+2xy/(x^2-y^2)
=(x^2+xy-xy+y^2+2xy)/(x^2-y^2)
=(x+y)^2/(x^2-y^2)
=(x+y)/(x-y)
计算(-x-y)(y-x)+(-x-y)(x+y),
计算 (x²/x+y)-x-y
行列式计算 x y x+y y x+y x x+y x y|x y x+y ||y x+y x ||x+y x y |
计算2x/x-y
计算 x(x-3y)
计算:y-x分之x+y+x-y分之y-y-x分之2x-y
计算2/3x-2/x+y(x+y/3x-x-y)/x-y/x
计算(-x-y)²
计算:(x+3y)(2x-y)
计算:(2x-3y)(x+y)
计算:(x+2y)(2x-y)
计算:(-x-2y) * (3x-y)
计算：(x+y)-3(x-2y).
计算:(x-y+9)(x+y-9)
计算（x+y-z)(x-y-z)
计算：(x-y+z)(-x+y+z)
计算：-(x+y)+(x-y) 要求：
计算(x+y)(x+y)^2(-x-y)^3